Biggest Allocation of the Stock They Pledged Last Year to Silicon Valley Foundation

Facebook CEO Mark Zuckerberg and his wife Priscilla Chan said they would make another large donation targeted at education, pledging to spend $120 million on San Francisco-area schools.

The couple said they plan to focus on poor communities in the Bay Area, where they live and work. They aim to start new district and charter schools, and to support existing schools with a focus on teacher training, student development and...